Yup. The majority of Europeans 10000 years ago actually had dark hair, dark skin and blue eyes. The population in the North seems to have developed lighter hair and skin tones on their own, whereas the ones in the south got lighter skin tones (and mostly brown eyes) by mixing with immigrants from the Middle East. No idea what it looked like in North America, though. Some Native American tribes have relatively light skin compared to that of "proto-"Europeans so I suppose its possible that certain parts of the North American population already had it back then. But then, I think, the characters in the game would also need to have Eurasian-looking facial features and that doesn't appear to be the case as far as I can tell. So yeah, it looks like they went with the most popular stereotype of what Europeans looked like at the time without much regard for facts.
